<template>
    <div class="cmt-container">
    <h3>发表评论</h3>
    <hr>
    <textarea placeholder="请输入要BB的内容（做多吐槽120字）" maxlength="120" v-model="msg"></textarea>

    <mt-button type="primary" size="large" @click="postComment">发表评论</mt-button>

    <div class="cmt-list">
      <div class="cmt-item" v-for="(item, i) in comment" :key="item.add_time">
        <div class="cmt-title">
          第{{ i+1 }}楼&nbsp;&nbsp;用户：{{ item.user_name }}&nbsp;&nbsp;
          发表时间：{{ item.add_time | dateFormat }}
        </div>
        <div class="cmt-body">
          {{ item.content === 'undefined' ? '此用户很懒，嘛都没说': item.content }}
        </div>
      </div>

    </div>

    <mt-button type="danger" size="large" plain @click="getMore">加载更多</mt-button>
  </div>
</template>
<script>
import { Toast } from "mint-ui";

    export default{
        data(){
            return{
                // id:this.$parent.id,
                pageIndex:1,
                comment:[],
                msg:''
            }
        },
        created(){
            this.getComments();
        },
        methods:{
            getComments(){
                this.$http.get("api/getcomments/"+this.id+"?pageindex="+this.pageIndex)
                .then((result)=>{
                    if(result.body.status===0){
                        this.comment=this.comment.concat(result.body.message)
                    }else{
                        Toast("评论加载失败")
                    }
                })
            },
            getMore(){
                this.pageIndex++;
                this.getComments();
            },
            postComment(){
                if(this.msg.trim().length===0){
                   return  Toast('评论内容不能为空')
                }
                this.$http.post('api/postcomment/'+this.$parent.id,{
                    content:this.msg.trim()
                })
                .then( function(result){
                    if(result.body.status===0){
                        //拼接出一个评论对象
                        var cmt={
                            user_name:"匿名用户",
                            add_time:Date.now(),
                            content:this.msg.trim()
                        };
                        this.comment.unshift(cmt);
                        this.msg=""
                    }
                })
            }
        },
        props: ["id"]
    }
</script>
<style lang="scss" scoped>
.cmt-container {
  h3 {
    font-size: 18px;
  }
  textarea {
    font-size: 14px;
    height: 85px;
    margin: 0;
  }

  .cmt-list {
    margin: 5px 0;
    .cmt-item {
      font-size: 13px;
      .cmt-title {
        line-height: 30px;
        background-color: #ccc;
      }
      .cmt-body {
        line-height: 35px;
        text-indent: 2em;
      }
    }
  }
}
</style>

